Thermoplastic resin composition and molded article thereof

Abstract

The present invention provides a resin composition comprising a thermoplastic resin comprising a constituting unit (A) derived from a compound represented by the following general formula (1), wherein the resin composition comprises an ultraviolet absorber in an amount of 2,000 ppm to 40,000 ppm:

The invention claimed is: 
     
       1. A resin composition comprising a thermoplastic resin comprising a constituting unit (A) derived from a compound represented by the following formula (1), wherein
 the resin composition comprises a benzotriazole-based ultraviolet absorber in an amount of 10,000 ppm to 20,000 ppm, 
 
       
         
           
           
               
               
           
         
         wherein R 1  to R 4  is each independently selected from the group consisting of a hydrogen atom, an alkyl group containing 1 to 20 carbon atoms, an alkoxyl group containing 1 to 20 carbon atoms, a cycloalkyl group containing 5 to 20 carbon atoms, a cycloalkoxyl group containing 5 to 20 carbon atoms, an aryl group containing 6 to 20 carbon atoms, and an aryloxy group containing 6 to 20 carbon atoms; 
         X 1  and X 2  is each independently selected from the group consisting of an alkylene group containing 2 to 8 carbon atoms, a cycloalkylene group containing 5 to 12 carbon atoms, and an arylene group containing 6 to 20 carbon atoms; and 
         m 1  and m 2  each independently represents an integer of 1 to 5. 
       
     
     
       2. The resin composition according to  claim 1 , wherein the thermoplastic resin further comprises at least one constituting unit selected from the group consisting of a constituting unit (B) derived from a compound represented by the following formula (2) and a constituting unit (C) derived from a compound represented by the following formula (3), 
       
         
           
           
               
               
           
         
         wherein Y 1  and Y 2  each independently represents an alkylene group containing 1 to 8 carbon atoms; and 
         n 1  and n 2  each independently represents an integer of 1 to 5, and 
       
       
         
           
           
               
               
           
         
         wherein R 6  and R 7  is each independently selected from the group consisting of a hydrogen atom, an alkyl group containing 1 to 20 carbon atoms, an alkoxyl group containing 1 to 20 carbon atoms, a cycloalkyl group containing 5 to 20 carbon atoms, a cycloalkoxyl group containing 5 to 20 carbon atoms, an aryl group containing 6 to 20 carbon atoms, an aryloxy group containing 6 to 20 carbon atoms, and a halogen atom; 
         Z 1  and Z 2  is each independently selected from the group consisting of an alkylene group containing 1 to 8 carbon atoms, a cycloalkylene group containing 6 to 10 carbon atoms, and an arylene group containing 6 to 10 carbon atoms; 
         l 1  and l 2  each independently represents an integer of 0 to 5; 
         Q represents a single bond or is selected from the group consisting of: 
       
       
         
           
           
               
               
           
         
         wherein R 8 , R 9 , and R 14  to R 17  is each independently selected from the group consisting of a hydrogen atom, an alkyl group containing 1 to 10 carbon atoms, and a phenyl group; 
         R 10  to R 13  each independently represents a hydrogen atom or an alkyl group containing 1 to 5 carbon atoms; 
         Z′ represents an integer of 3 to 11; and 
         R 6  and R 7  may be identical to or different from each other. 
       
     
     
       3. The resin composition according to  claim 2 , wherein
 the thermoplastic resin comprises the constituting unit (B), and 
 the molar ratio between the constituting unit (A) and the constituting unit (B) is the constituting unit (A):the constituting unit (B)=20:80 to 80:20. 
 
     
     
       4. The resin composition according to  claim 1 , wherein, in the formula (1), both X 1  and X 2  represent ethylene. 
     
     
       5. The resin composition according to  claim 1 , wherein, in the formula (1), both m 1  and m 2  represent 1. 
     
     
       6. The resin composition according to  claim 1 , wherein the compound represented by the general formula (1) is selected from the group consisting of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene and 9,9-bis(4-(2-hydroxyethoxy)-3-phenylphenyl)fluorene. 
     
     
       7. The resin composition according to  claim 2 , wherein, in the formula (2), both Y 1  and Y 2  represent ethylene. 
     
     
       8. The resin composition according to  claim 2 , wherein, in the formula (2), both n 1  and n 2  represent 1. 
     
     
       9. The resin composition according to  claim 7 , wherein the compound represented by the formula (2) is 2,2′-bis(2-hydroxyethoxy)-1,1′-binaphthalene. 
     
     
       10. The resin composition according to  claim 2 , wherein, in the formula (3),
 l 1  and l 2  represent 0, and 
 Q represents: 
 
       
         
           
           
               
               
           
         
         wherein R 8  and R 9  are as defined in the formula (3). 
       
     
     
       11. The resin composition according to  claim 10 , wherein the compound represented by the formula (3) is bisphenol A. 
     
     
       12. The resin composition according to  claim 1 , wherein the thermoplastic resin is selected from the group consisting of a polycarbonate resin, a polyester resin, and a polyester carbonate resin. 
     
     
       13. The resin composition according to  claim 12 , wherein the thermoplastic resin is a polycarbonate resin. 
     
     
       14. The resin composition according to  claim 1 , wherein the light transmittance at a wavelength of 410 nm is 50% or less. 
     
     
       15. The resin composition according to  claim 1 , wherein the weight average molecular weight of the thermoplastic resin is 10,000 to 100,000. 
     
     
       16. The resin composition according to  claim 1 , which further comprises an antioxidant and/or a release agent. 
     
     
       17. A molded body comprising the resin composition according to  claim 1 . 
     
     
       18. The molded body according to  claim 17 , which is an optical film. 
     
     
       19. The molded body according to  claim 17 , which is an optical lens.